console.warn("THREE.OrbitControls: As part of the transition to ES6 Modules, the files in 'examples/js' were deprecated in May 2020 (r117) and will be deleted in December 2020 (r124). You can find more information about developing using ES6 Modules in https://threejs.org/docs/index.html#manual/en/introduction/Import-via-modules.")
/**
 * @author qiao / https://github.com/qiao
 * @author mrdoob / http://mrdoob.com
 * @author alteredq / http://alteredqualia.com/
 * @author WestLangley / http://github.com/WestLangley
 * @author erich666 / http://erichaines.com
 * @author ScieCode / http://github.com/sciecode
 */

// This set of controls performs orbiting, dollying (zooming), and panning.
// Unlike TrackballControls, it maintains the "up" direction object.up (+Y by default).
//
//    Orbit - left mouse / touch: one-finger move
//    Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish
//    Pan - right mouse, or left mouse + ctrl/meta/shiftKey, or arrow keys / touch: two-finger move

THREE.OrbitControls = function (object, domElement) {

    if (domElement === undefined) console.warn('THREE.OrbitControls: The second parameter "domElement" is now mandatory.')
    if (domElement === document) console.error('THREE.OrbitControls: "document" should not be used as the target "domElement". Please use "renderer.domElement" instead.')

    this.object = object
    this.domElement = domElement

    // Set to false to disable this control
    this.enabled = true

    // "target" sets the location of focus, where the object orbits around
    this.target = new THREE.Vector3()

    // How far you can dolly in and out ( PerspectiveCamera only )
    this.minDistance = 0
    this.maxDistance = Infinity

    // How far you can zoom in and out ( OrthographicCamera only )
    this.minZoom = 0
    this.maxZoom = Infinity

    // How far you can orbit vertically, upper and lower limits.
    // Range is 0 to Math.PI radians.
    this.minPolarAngle = 0 // radians
    this.maxPolarAngle = Math.PI // radians

    // How far you can orbit horizontally, upper and lower limits.
    // If set, must be a sub-interval of the interval [ - Math.PI, Math.PI ].
    this.minAzimuthAngle = - Infinity // radians
    this.maxAzimuthAngle = Infinity // radians

    // Set to true to enable damping (inertia)
    // If damping is enabled, you must call controls.update() in your animation loop
    this.enableDamping = false
    this.dampingFactor = 0.05

    // This option actually enables dollying in and out; left as "zoom" for backwards compatibility.
    // Set to false to disable zooming
    this.enableZoom = true
    this.zoomSpeed = 1.0

    // Set to false to disable rotating
    this.enableRotate = true
    this.rotateSpeed = 1.0

    // Set to false to disable panning
    this.enablePan = true
    this.panSpeed = 1.0
    this.screenSpacePanning = false // if true, pan in screen-space
    this.keyPanSpeed = 7.0	// pixels moved per arrow key push

    // Set to true to automatically rotate around the target
    // If auto-rotate is enabled, you must call controls.update() in your animation loop
    this.autoRotate = false
    this.autoRotateSpeed = 2.0 // 30 seconds per round when fps is 60

    // Set to false to disable use of the keys
    this.enableKeys = true

    // The four arrow keys
    this.keys = { LEFT: 37, UP: 38, RIGHT: 39, BOTTOM: 40 }

    // Mouse buttons
    this.mouseButtons = { LEFT: THREE.MOUSE.ROTATE, MIDDLE: THREE.MOUSE.DOLLY, RIGHT: THREE.MOUSE.PAN }

    // Touch fingers
    this.touches = { ONE: THREE.TOUCH.ROTATE, TWO: THREE.TOUCH.DOLLY_PAN }

    // for reset
    this.target0 = this.target.clone()
    this.position0 = this.object.position.clone()
    this.zoom0 = this.object.zoom

    //
    // public methods
    //

    this.getPolarAngle = function () {

        return spherical.phi

    }

    this.getAzimuthalAngle = function () {

        return spherical.theta

    }

    this.saveState = function () {

        scope.target0.copy(scope.target)
        scope.position0.copy(scope.object.position)
        scope.zoom0 = scope.object.zoom

    }

    this.reset = function () {

        scope.target.copy(scope.target0)
        scope.object.position.copy(scope.position0)
        scope.object.zoom = scope.zoom0

        scope.object.updateProjectionMatrix()
        scope.dispatchEvent(changeEvent)

        scope.update()

        state = STATE.NONE

    }

    // this method is exposed, but perhaps it would be better if we can make it private...
    this.update = function () {

        var offset = new THREE.Vector3()

        // so camera.up is the orbit axis
        var quat = new THREE.Quaternion().setFromUnitVectors(object.up, new THREE.Vector3(0, 1, 0))
        var quatInverse = quat.clone().inverse()

        var lastPosition = new THREE.Vector3()
        var lastQuaternion = new THREE.Quaternion()

        return function update () {

            var position = scope.object.position

            offset.copy(position).sub(scope.target)

            // rotate offset to "y-axis-is-up" space
            offset.applyQuaternion(quat)

            // angle from z-axis around y-axis
            spherical.setFromVector3(offset)

            if (scope.autoRotate && state === STATE.NONE) {

                rotateLeft(getAutoRotationAngle())

            }

            if (scope.enableDamping) {

                spherical.theta += sphericalDelta.theta * scope.dampingFactor
                spherical.phi += sphericalDelta.phi * scope.dampingFactor

            } else {

                spherical.theta += sphericalDelta.theta
                spherical.phi += sphericalDelta.phi

            }

            // restrict theta to be between desired limits
            spherical.theta = Math.max(scope.minAzimuthAngle, Math.min(scope.maxAzimuthAngle, spherical.theta))

            // restrict phi to be between desired limits
            spherical.phi = Math.max(scope.minPolarAngle, Math.min(scope.maxPolarAngle, spherical.phi))

            spherical.makeSafe()


            spherical.radius *= scale

            // restrict radius to be between desired limits
            spherical.radius = Math.max(scope.minDistance, Math.min(scope.maxDistance, spherical.radius))

            // move target to panned location

            if (scope.enableDamping === true) {

                scope.target.addScaledVector(panOffset, scope.dampingFactor)

            } else {

                scope.target.add(panOffset)

            }

            offset.setFromSpherical(spherical)

            // rotate offset back to "camera-up-vector-is-up" space
            offset.applyQuaternion(quatInverse)

            position.copy(scope.target).add(offset)

            scope.object.lookAt(scope.target)

            if (scope.enableDamping === true) {

                sphericalDelta.theta *= (1 - scope.dampingFactor)
                sphericalDelta.phi *= (1 - scope.dampingFactor)

                panOffset.multiplyScalar(1 - scope.dampingFactor)

            } else {

                sphericalDelta.set(0, 0, 0)

                panOffset.set(0, 0, 0)

            }

            scale = 1

            // update condition is:
            // min(camera displacement, camera rotation in radians)^2 > EPS
            // using small-angle approximation cos(x/2) = 1 - x^2 / 8

            if (zoomChanged ||
                lastPosition.distanceToSquared(scope.object.position) > EPS ||
                8 * (1 - lastQuaternion.dot(scope.object.quaternion)) > EPS) {

                scope.dispatchEvent(changeEvent)

                lastPosition.copy(scope.object.position)
                lastQuaternion.copy(scope.object.quaternion)
                zoomChanged = false

                return true

            }

            return false

        }

    }()

    this.dispose = function () {

        scope.domElement.removeEventListener('contextmenu', onContextMenu, false)
        scope.domElement.removeEventListener('mousedown', onMouseDown, false)
        scope.domElement.removeEventListener('wheel', onMouseWheel, false)

        scope.domElement.removeEventListener('touchstart', onTouchStart, false)
        scope.domElement.removeEventListener('touchend', onTouchEnd, false)
        scope.domElement.removeEventListener('touchmove', onTouchMove, false)

        document.removeEventListener('mousemove', onMouseMove, false)
        document.removeEventListener('mouseup', onMouseUp, false)

        scope.domElement.removeEventListener('keydown', onKeyDown, false)

        //scope.dispatchEvent( { type: 'dispose' } ); // should this be added here?

    }

    //
    // internals
    //

    var scope = this

    var changeEvent = { type: 'change' }
    var startEvent = { type: 'start' }
    var endEvent = { type: 'end' }

    var STATE = {
        NONE: - 1,
        ROTATE: 0,
        DOLLY: 1,
        PAN: 2,
        TOUCH_ROTATE: 3,
        TOUCH_PAN: 4,
        TOUCH_DOLLY_PAN: 5,
        TOUCH_DOLLY_ROTATE: 6
    }

    var state = STATE.NONE

    var EPS = 0.000001

    // current position in spherical coordinates
    var spherical = new THREE.Spherical()
    var sphericalDelta = new THREE.Spherical()

    var scale = 1
    var panOffset = new THREE.Vector3()
    var zoomChanged = false

    var rotateStart = new THREE.Vector2()
    var rotateEnd = new THREE.Vector2()
    var rotateDelta = new THREE.Vector2()

    var panStart = new THREE.Vector2()
    var panEnd = new THREE.Vector2()
    var panDelta = new THREE.Vector2()

    var dollyStart = new THREE.Vector2()
    var dollyEnd = new THREE.Vector2()
    var dollyDelta = new THREE.Vector2()

    function getAutoRotationAngle () {

        return 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed

    }

    function getZoomScale () {

        return Math.pow(0.95, scope.zoomSpeed)

    }

    function rotateLeft (angle) {

        sphericalDelta.theta -= angle

    }

    function rotateUp (angle) {

        sphericalDelta.phi -= angle

    }

    var panLeft = function () {

        var v = new THREE.Vector3()

        return function panLeft (distance, objectMatrix) {

            v.setFromMatrixColumn(objectMatrix, 0) // get X column of objectMatrix
            v.multiplyScalar(- distance)

            panOffset.add(v)

        }

    }()

    var panUp = function () {

        var v = new THREE.Vector3()

        return function panUp (distance, objectMatrix) {

            if (scope.screenSpacePanning === true) {

                v.setFromMatrixColumn(objectMatrix, 1)

            } else {

                v.setFromMatrixColumn(objectMatrix, 0)
                v.crossVectors(scope.object.up, v)

            }

            v.multiplyScalar(distance)

            panOffset.add(v)

        }

    }()

    // deltaX and deltaY are in pixels; right and down are positive
    var pan = function () {

        var offset = new THREE.Vector3()

        return function pan (deltaX, deltaY) {

            var element = scope.domElement

            if (scope.object.isPerspectiveCamera) {

                // perspective
                var position = scope.object.position
                offset.copy(position).sub(scope.target)
                var targetDistance = offset.length()

                // half of the fov is center to top of screen
                targetDistance *= Math.tan((scope.object.fov / 2) * Math.PI / 180.0)

                // we use only clientHeight here so aspect ratio does not distort speed
                panLeft(2 * deltaX * targetDistance / element.clientHeight, scope.object.matrix)
                panUp(2 * deltaY * targetDistance / element.clientHeight, scope.object.matrix)

            } else if (scope.object.isOrthographicCamera) {

                // orthographic
                panLeft(deltaX * (scope.object.right - scope.object.left) / scope.object.zoom / element.clientWidth, scope.object.matrix)
                panUp(deltaY * (scope.object.top - scope.object.bottom) / scope.object.zoom / element.clientHeight, scope.object.matrix)

            } else {

                // camera neither orthographic nor perspective
                console.warn('WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.')
                scope.enablePan = false

            }

        }

    }()

    function dollyOut (dollyScale) {

        if (scope.object.isPerspectiveCamera) {

            scale /= dollyScale

        } else if (scope.object.isOrthographicCamera) {

            scope.object.zoom = Math.max(scope.minZoom, Math.min(scope.maxZoom, scope.object.zoom * dollyScale))
            scope.object.updateProjectionMatrix()
            zoomChanged = true

        } else {

            console.warn('WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.')
            scope.enableZoom = false

        }

    }

    function dollyIn (dollyScale) {

        if (scope.object.isPerspectiveCamera) {

            scale *= dollyScale

        } else if (scope.object.isOrthographicCamera) {

            scope.object.zoom = Math.max(scope.minZoom, Math.min(scope.maxZoom, scope.object.zoom / dollyScale))
            scope.object.updateProjectionMatrix()
            zoomChanged = true

        } else {

            console.warn('WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.')
            scope.enableZoom = false

        }

    }

    //
    // event callbacks - update the object state
    //

    function handleMouseDownRotate (event) {

        rotateStart.set(event.clientX, event.clientY)

    }

    function handleMouseDownDolly (event) {

        dollyStart.set(event.clientX, event.clientY)

    }

    function handleMouseDownPan (event) {

        panStart.set(event.clientX, event.clientY)

    }

    function handleMouseMoveRotate (event) {

        rotateEnd.set(event.clientX, event.clientY)

        rotateDelta.subVectors(rotateEnd, rotateStart).multiplyScalar(scope.rotateSpeed)

        var element = scope.domElement

        rotateLeft(2 * Math.PI * rotateDelta.x / element.clientHeight) // yes, height

        rotateUp(2 * Math.PI * rotateDelta.y / element.clientHeight)

        rotateStart.copy(rotateEnd)

        scope.update()

    }

    function handleMouseMoveDolly (event) {

        dollyEnd.set(event.clientX, event.clientY)

        dollyDelta.subVectors(dollyEnd, dollyStart)

        if (dollyDelta.y > 0) {

            dollyOut(getZoomScale())

        } else if (dollyDelta.y < 0) {

            dollyIn(getZoomScale())

        }

        dollyStart.copy(dollyEnd)

        scope.update()

    }

    function handleMouseMovePan (event) {

        panEnd.set(event.clientX, event.clientY)

        panDelta.subVectors(panEnd, panStart).multiplyScalar(scope.panSpeed)

        pan(panDelta.x, panDelta.y)

        panStart.copy(panEnd)

        scope.update()

    }

    function handleMouseUp ( /*event*/) {

        // no-op

    }

    function handleMouseWheel (event) {

        if (event.deltaY < 0) {

            dollyIn(getZoomScale())

        } else if (event.deltaY > 0) {

            dollyOut(getZoomScale())

        }

        scope.update()

    }

    function handleKeyDown (event) {

        var needsUpdate = false

        switch (event.keyCode) {

            case scope.keys.UP:
                pan(0, scope.keyPanSpeed)
                needsUpdate = true
                break

            case scope.keys.BOTTOM:
                pan(0, - scope.keyPanSpeed)
                needsUpdate = true
                break

            case scope.keys.LEFT:
                pan(scope.keyPanSpeed, 0)
                needsUpdate = true
                break

            case scope.keys.RIGHT:
                pan(- scope.keyPanSpeed, 0)
                needsUpdate = true
                break

        }

        if (needsUpdate) {

            // prevent the browser from scrolling on cursor keys
            event.preventDefault()

            scope.update()

        }


    }

    function handleTouchStartRotate (event) {

        if (event.touches.length == 1) {

            rotateStart.set(event.touches[0].pageX, event.touches[0].pageY)

        } else {

            var x = 0.5 * (event.touches[0].pageX + event.touches[1].pageX)
            var y = 0.5 * (event.touches[0].pageY + event.touches[1].pageY)

            rotateStart.set(x, y)

        }

    }

    function handleTouchStartPan (event) {

        if (event.touches.length == 1) {

            panStart.set(event.touches[0].pageX, event.touches[0].pageY)

        } else {

            var x = 0.5 * (event.touches[0].pageX + event.touches[1].pageX)
            var y = 0.5 * (event.touches[0].pageY + event.touches[1].pageY)

            panStart.set(x, y)

        }

    }

    function handleTouchStartDolly (event) {

        var dx = event.touches[0].pageX - event.touches[1].pageX
        var dy = event.touches[0].pageY - event.touches[1].pageY

        var distance = Math.sqrt(dx * dx + dy * dy)

        dollyStart.set(0, distance)

    }

    function handleTouchStartDollyPan (event) {

        if (scope.enableZoom) handleTouchStartDolly(event)

        if (scope.enablePan) handleTouchStartPan(event)

    }

    function handleTouchStartDollyRotate (event) {

        if (scope.enableZoom) handleTouchStartDolly(event)

        if (scope.enableRotate) handleTouchStartRotate(event)

    }

    function handleTouchMoveRotate (event) {

        if (event.touches.length == 1) {

            rotateEnd.set(event.touches[0].pageX, event.touches[0].pageY)

        } else {

            var x = 0.5 * (event.touches[0].pageX + event.touches[1].pageX)
            var y = 0.5 * (event.touches[0].pageY + event.touches[1].pageY)

            rotateEnd.set(x, y)

        }

        rotateDelta.subVectors(rotateEnd, rotateStart).multiplyScalar(scope.rotateSpeed)

        var element = scope.domElement

        rotateLeft(2 * Math.PI * rotateDelta.x / element.clientHeight) // yes, height

        rotateUp(2 * Math.PI * rotateDelta.y / element.clientHeight)

        rotateStart.copy(rotateEnd)

    }

    function handleTouchMovePan (event) {

        if (event.touches.length == 1) {

            panEnd.set(event.touches[0].pageX, event.touches[0].pageY)

        } else {

            var x = 0.5 * (event.touches[0].pageX + event.touches[1].pageX)
            var y = 0.5 * (event.touches[0].pageY + event.touches[1].pageY)

            panEnd.set(x, y)

        }

        panDelta.subVectors(panEnd, panStart).multiplyScalar(scope.panSpeed)

        pan(panDelta.x, panDelta.y)

        panStart.copy(panEnd)

    }

    function handleTouchMoveDolly (event) {

        var dx = event.touches[0].pageX - event.touches[1].pageX
        var dy = event.touches[0].pageY - event.touches[1].pageY

        var distance = Math.sqrt(dx * dx + dy * dy)

        dollyEnd.set(0, distance)

        dollyDelta.set(0, Math.pow(dollyEnd.y / dollyStart.y, scope.zoomSpeed))

        dollyOut(dollyDelta.y)

        dollyStart.copy(dollyEnd)

    }

    function handleTouchMoveDollyPan (event) {

        if (scope.enableZoom) handleTouchMoveDolly(event)

        if (scope.enablePan) handleTouchMovePan(event)

    }

    function handleTouchMoveDollyRotate (event) {

        if (scope.enableZoom) handleTouchMoveDolly(event)

        if (scope.enableRotate) handleTouchMoveRotate(event)

    }

    function handleTouchEnd ( /*event*/) {

        // no-op

    }

    //
    // event handlers - FSM: listen for events and reset state
    //

    function onMouseDown (event) {

        if (scope.enabled === false) return

        // Prevent the browser from scrolling.
        event.preventDefault()

        // Manually set the focus since calling preventDefault above
        // prevents the browser from setting it automatically.

        scope.domElement.focus ? scope.domElement.focus() : window.focus()

        var mouseAction

        switch (event.button) {

            case 0:

                mouseAction = scope.mouseButtons.LEFT
                break

            case 1:

                mouseAction = scope.mouseButtons.MIDDLE
                break

            case 2:

                mouseAction = scope.mouseButtons.RIGHT
                break

            default:

                mouseAction = - 1

        }

        switch (mouseAction) {

            case THREE.MOUSE.DOLLY:

                if (scope.enableZoom === false) return

                handleMouseDownDolly(event)

                state = STATE.DOLLY

                break

            case THREE.MOUSE.ROTATE:

                if (event.ctrlKey || event.metaKey || event.shiftKey) {

                    if (scope.enablePan === false) return

                    handleMouseDownPan(event)

                    state = STATE.PAN

                } else {

                    if (scope.enableRotate === false) return

                    handleMouseDownRotate(event)

                    state = STATE.ROTATE

                }

                break

            case THREE.MOUSE.PAN:

                if (event.ctrlKey || event.metaKey || event.shiftKey) {

                    if (scope.enableRotate === false) return

                    handleMouseDownRotate(event)

                    state = STATE.ROTATE

                } else {

                    if (scope.enablePan === false) return

                    handleMouseDownPan(event)

                    state = STATE.PAN

                }

                break

            default:

                state = STATE.NONE

        }

        if (state !== STATE.NONE) {

            document.addEventListener('mousemove', onMouseMove, false)
            document.addEventListener('mouseup', onMouseUp, false)

            scope.dispatchEvent(startEvent)

        }

    }

    function onMouseMove (event) {

        if (scope.enabled === false) return

        event.preventDefault()

        switch (state) {

            case STATE.ROTATE:

                if (scope.enableRotate === false) return

                handleMouseMoveRotate(event)

                break

            case STATE.DOLLY:

                if (scope.enableZoom === false) return

                handleMouseMoveDolly(event)

                break

            case STATE.PAN:

                if (scope.enablePan === false) return

                handleMouseMovePan(event)

                break

        }

    }

    function onMouseUp (event) {

        if (scope.enabled === false) return

        handleMouseUp(event)

        document.removeEventListener('mousemove', onMouseMove, false)
        document.removeEventListener('mouseup', onMouseUp, false)

        scope.dispatchEvent(endEvent)

        state = STATE.NONE

    }

    function onMouseWheel (event) {

        if (scope.enabled === false || scope.enableZoom === false || (state !== STATE.NONE && state !== STATE.ROTATE)) return

        event.preventDefault()
        event.stopPropagation()

        scope.dispatchEvent(startEvent)

        handleMouseWheel(event)

        scope.dispatchEvent(endEvent)

    }

    function onKeyDown (event) {

        if (scope.enabled === false || scope.enableKeys === false || scope.enablePan === false) return

        handleKeyDown(event)

    }

    function onTouchStart (event) {

        if (scope.enabled === false) return

        event.preventDefault() // prevent scrolling

        switch (event.touches.length) {

            case 1:

                switch (scope.touches.ONE) {

                    case THREE.TOUCH.ROTATE:

                        if (scope.enableRotate === false) return

                        handleTouchStartRotate(event)

                        state = STATE.TOUCH_ROTATE

                        break

                    case THREE.TOUCH.PAN:

                        if (scope.enablePan === false) return

                        handleTouchStartPan(event)

                        state = STATE.TOUCH_PAN

                        break

                    default:

                        state = STATE.NONE

                }

                break

            case 2:

                switch (scope.touches.TWO) {

                    case THREE.TOUCH.DOLLY_PAN:

                        if (scope.enableZoom === false && scope.enablePan === false) return

                        handleTouchStartDollyPan(event)

                        state = STATE.TOUCH_DOLLY_PAN

                        break

                    case THREE.TOUCH.DOLLY_ROTATE:

                        if (scope.enableZoom === false && scope.enableRotate === false) return

                        handleTouchStartDollyRotate(event)

                        state = STATE.TOUCH_DOLLY_ROTATE

                        break

                    default:

                        state = STATE.NONE

                }

                break

            default:

                state = STATE.NONE

        }

        if (state !== STATE.NONE) {

            scope.dispatchEvent(startEvent)

        }

    }

    function onTouchMove (event) {

        if (scope.enabled === false) return

        event.preventDefault() // prevent scrolling
        event.stopPropagation()

        switch (state) {

            case STATE.TOUCH_ROTATE:

                if (scope.enableRotate === false) return

                handleTouchMoveRotate(event)

                scope.update()

                break

            case STATE.TOUCH_PAN:

                if (scope.enablePan === false) return

                handleTouchMovePan(event)

                scope.update()

                break

            case STATE.TOUCH_DOLLY_PAN:

                if (scope.enableZoom === false && scope.enablePan === false) return

                handleTouchMoveDollyPan(event)

                scope.update()

                break

            case STATE.TOUCH_DOLLY_ROTATE:

                if (scope.enableZoom === false && scope.enableRotate === false) return

                handleTouchMoveDollyRotate(event)

                scope.update()

                break

            default:

                state = STATE.NONE

        }

    }

    function onTouchEnd (event) {

        if (scope.enabled === false) return

        handleTouchEnd(event)

        scope.dispatchEvent(endEvent)

        state = STATE.NONE

    }

    function onContextMenu (event) {

        if (scope.enabled === false) return

        event.preventDefault()

    }

    //

    scope.domElement.addEventListener('contextmenu', onContextMenu, false)

    scope.domElement.addEventListener('mousedown', onMouseDown, false)
    scope.domElement.addEventListener('wheel', onMouseWheel, false)

    scope.domElement.addEventListener('touchstart', onTouchStart, false)
    scope.domElement.addEventListener('touchend', onTouchEnd, false)
    scope.domElement.addEventListener('touchmove', onTouchMove, false)

    scope.domElement.addEventListener('keydown', onKeyDown, false)

    // make sure element can receive keys.

    if (scope.domElement.tabIndex === - 1) {

        scope.domElement.tabIndex = 0

    }

    // force an update at start

    this.update()

}

THREE.OrbitControls.prototype = Object.create(THREE.EventDispatcher.prototype)
THREE.OrbitControls.prototype.constructor = THREE.OrbitControls


// This set of controls performs orbiting, dollying (zooming), and panning.
// Unlike TrackballControls, it maintains the "up" direction object.up (+Y by default).
// This is very similar to OrbitControls, another set of touch behavior
//
//    Orbit - right mouse, or left mouse + ctrl/meta/shiftKey / touch: two-finger rotate
//    Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish
//    Pan - left mouse, or arrow keys / touch: one-finger move

THREE.MapControls = function (object, domElement) {

    THREE.OrbitControls.call(this, object, domElement)

    this.mouseButtons.LEFT = THREE.MOUSE.PAN
    this.mouseButtons.RIGHT = THREE.MOUSE.ROTATE

    this.touches.ONE = THREE.TOUCH.PAN
    this.touches.TWO = THREE.TOUCH.DOLLY_ROTATE

}

THREE.MapControls.prototype = Object.create(THREE.EventDispatcher.prototype)
THREE.MapControls.prototype.constructor = THREE.MapControls